Hydraulic oil tank anti-vacuum device

Abstract

The application discloses a hydraulic oil tank anti-suction empty device and belongs to the technical field of hydraulic oil taking equipment. Mainly comprising an oil tank, a hydraulic pump is fixedly installed at the upper end of the oil tank, an oil pipe is communicated with the input end of the hydraulic pump, the oil pipe extends into the inside of the oil tank, an oil suction device is communicated with the bottom of the oil pipe, a first floating ball is arranged in communication between the oil pipe and the oil suction device, and the inside of the first floating ball is hollow; a hose is arranged between the first floating ball and the oil pipe. The hydraulic oil tank anti-suction empty device can prevent the suction empty phenomenon from occurring.

Description

Technical Field

[0001] This application relates to the technical field of hydraulic oil extraction equipment, specifically a hydraulic oil tank anti-vacuum device. Background Technology

[0002] A hydraulic system is an engineering system that uses liquid (usually hydraulic oil) as the working medium to achieve mechanical control through energy conversion and transmission. It is widely used in industries such as industry, transportation, and aerospace. During operation, hydraulic systems are prone to cavitation. For example, in tunneling machines and excavators, when climbing or going downhill, the tilting of the oil in the tank may expose the oil suction pipe, resulting in cavitation. Similarly, in stamping machines and vibrating screens, equipment vibration may cause fluctuations on the surface of the oil, which in turn can lead to cavitation. The main cause of air intake in a hydraulic system is that the hydraulic pump draws in air, which causes air bubbles to mix into the oil, leading to system vibration, noise, performance degradation, and even component damage. A hydraulic oil tank anti-air suction device is a device used to prevent the hydraulic pump from sucking in air and to ensure the stable operation of the system. For example, the patent with publication number CN113530897A specifically discloses a hydraulic oil tank anti-air suction device. This patent sets the oil suction pipe at the bottom of the oil tank. By constantly observing the oil level in the oil tank, the air chamber and the oil storage chamber can be separated when the oil tank is low on oil, thus preventing the occurrence of air suction. However, during the operation of a hydraulic system, external impurities (such as dust and metal particles) may enter the oil tank through seal wear, pipeline corrosion, or maintenance. At the same time, the hydraulic oil itself may produce precipitates such as colloids and acidic substances due to oxidation, hydrolysis, or decomposition of additives. Therefore, sludge may exist at the bottom of the oil tank. Although placing the oil suction pipe at the bottom of the oil tank can minimize the risk of cavitation, the sludge at the bottom of the tank may affect the quality of the hydraulic oil entering the hydraulic system, thereby affecting the stable operation of the hydraulic system. Therefore, it is necessary to provide a hydraulic oil tank anti-cavitation device to solve the above problems.

[0003] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0004] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a hydraulic oil tank anti-vacuum device, which solves the problem of oil sludge being sucked in that may be caused by placing the oil suction pipe at the bottom of the oil tank in the existing hydraulic system.

[0005] The technical solution adopted by this application to solve its technical problem is: a hydraulic oil tank anti-vacuum device, including an oil tank, a hydraulic pump fixedly installed at the upper end of the oil tank, an oil pipe connected to the input end of the hydraulic pump, the oil pipe extending into the interior of the oil tank, and an oil suction device connected to the bottom of the oil pipe; A first float is provided between the oil pipe and the oil suction device, and the first float is hollow inside. A flexible hose is provided between the first float and the oil pipe.

[0006] Furthermore, the hose is a corrugated pipe.

[0007] Furthermore, the oil suction device is a tubular pipe with an open top, and multiple sets of filter holes are provided around the periphery of the oil suction device.

[0008] Furthermore, a counterweight is suspended at the bottom of the oil suction device.

[0009] Furthermore, a pull rope is connected to the bottom of the counterweight, and two sets of positioning rings are provided at the bottom of the oil tank. The pull rope passes horizontally through the two sets of positioning rings, and a second float is connected to the end of the pull rope.

[0010] Furthermore, the buoyancy of the second float is less than that of the first float.

[0011] The beneficial effects of this application are as follows: The hydraulic oil tank anti-cavitation device provided by this application has a first float ball and a hose that can be suspended on the oil suction device. When the hydraulic oil level changes, the first float ball can rise and fall synchronously and drive the oil suction device to move synchronously, so that the oil suction device is always below the liquid level, thereby preventing the occurrence of cavitation.

[0012] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is an overall schematic diagram of a hydraulic oil tank anti-vacuum device according to this application; Figure 2 for Figure 1 A partial structural diagram at point A in the middle; The following are the labeling elements in the figure: 1. Oil tank; 2. Hydraulic pump; 3. Oil pipe; 4. Hose; 5. First float; 6. Oil suction device; 7. Counterweight; 8. Pull rope; 9. Second float; 10. Positioning ring. Detailed Implementation

[0014] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0015] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0016] like Figures 1-2 As shown, this application provides a hydraulic oil tank anti-vacuum device, including an oil tank 1, which stores hydraulic oil and serves as the oil supply part of the hydraulic system, responsible for storing hydraulic oil. A hydraulic pump 2 is fixedly installed at the upper end of the oil tank 1, which is used to pump the hydraulic oil in the oil tank 1 to the hydraulic system to complete the various functions of the hydraulic system. An oil pipe 3 is connected to the input end of the hydraulic pump 2. The oil pipe 3 extends into the interior of the oil tank 1, and an oil suction device 6 is connected to the bottom of the oil pipe 3. The oil suction device 6 extends into the hydraulic oil, so that when the hydraulic pump 2 is working, the hydraulic oil can be pumped into the hydraulic system through the oil suction device 6. It should be noted that the oil suction device 6 is a tubular pipe with an open top, and multiple sets of filter holes are provided around the periphery of the oil suction device 6, so that hydraulic oil can enter the interior of the oil suction device 6 through the filter holes, and then be pumped by the hydraulic pump 2. The filter holes can prevent impurities from entering the hydraulic system. During the hydraulic oil pumping process, if the position of the oil suction device 6 is high, when the oil in the oil tank 1 is consumed to a certain extent, the oil suction device 6 may detach from the hydraulic oil, resulting in cavitation. When the position of the oil suction device 6 is low, although cavitation can be avoided to the greatest extent, the sludge at the bottom of the oil tank 1 may affect the quality of the hydraulic oil entering the hydraulic system, thereby affecting the stable operation of the hydraulic system. To solve the above problems, such as Figures 1-2As shown, a first float 5 is connected between the oil pipe 3 and the oil suction device 6. The first float 5 is hollow inside to facilitate the passage of hydraulic oil. The first float 5 has a certain buoyancy and can float on the surface of the hydraulic oil. So when the hydraulic oil level changes, the first float 5 can rise and fall synchronously and drive the oil suction device 6 to move synchronously. This can adapt to the oil suction at different liquid levels. And due to the action of the first float 5, the oil suction device 6 is always below the liquid level, thus preventing the occurrence of cavitation. To accommodate the up-and-down movement of the first float 5, a hose 4 is provided between the first float 5 and the oil pipe 3. The hose 4 can be a corrugated pipe, so that it can adaptively expand and contract when the first float 5 floats.

[0017] To maintain the stability of the oil suction device 6 when the hydraulic oil level fluctuates, such as Figures 1-2 As shown, a counterweight 7 is suspended at the bottom of the oil suction device 6. The counterweight 7 can provide a certain vertical pulling force to prevent excessive fluctuation of the oil suction device 6. It should be noted that the weight of the counterweight 7 is small and will not affect the suspension of the first float 5. To further maintain the stability of the oil suction device 6, a pull rope 8 is connected to the bottom of the counterweight 7, and two sets of positioning rings 10 are set at the bottom of the oil tank 1. The pull rope 8 passes horizontally through the two sets of positioning rings 10, and a second float 9 is connected to the end of the pull rope 8. The buoyancy of the second float 9 can be transmitted to the counterweight 7 through the pull rope 8. Due to the restriction of the positioning rings 10, the pulling force of the pull rope 8 on the counterweight 7 is vertically downward, thereby further maintaining the stability of the position of the oil suction device 6. Furthermore, the buoyancy of the second float 9 is less than that of the first float 5, so it will not affect the suspension of the first float 5.

[0018] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A hydraulic oil tank anti-vacuum device, characterized in that: include: Oil tank (1), a hydraulic pump (2) is fixedly installed at the upper end of the oil tank (1), the input end of the hydraulic pump (2) is connected to an oil pipe (3), the oil pipe (3) extends into the interior of the oil tank (1), and an oil suction device (6) is connected to the bottom of the oil pipe (3). A first float (5) is provided between the oil pipe (3) and the oil suction device (6), and the first float (5) is hollow inside; A hose (4) is provided between the first float (5) and the oil pipe (3).

2. The hydraulic oil tank anti-vacuum device according to claim 1, characterized in that: The hose (4) is a corrugated pipe.

3. The hydraulic oil tank anti-vacuum device according to claim 1, characterized in that: The oil suction device (6) is a tubular pipe with an open top, and multiple sets of filter holes are provided around the periphery of the oil suction device (6).

4. The hydraulic oil tank anti-vacuum device according to claim 1, characterized in that: A counterweight (7) is suspended at the bottom of the oil suction device (6).

5. A hydraulic oil tank anti-vacuum device according to claim 4, characterized in that: The bottom of the counterweight (7) is connected to a pull rope (8), and the bottom of the oil tank (1) is provided with two sets of positioning rings (10). The pull rope (8) passes horizontally through the two sets of positioning rings (10), and a second float (9) is connected to the end of the pull rope (8).

6. A hydraulic oil tank anti-vacuum device according to claim 5, characterized in that: The buoyancy of the second float (9) is less than that of the first float (5).

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